Oil-burner.



PATENTED NOV. 10', 1903.

H. L. SHERWOOD.

OIL BURNER. I APPLICATION FICLED DEG. 26, 1902.

l x \\\v\\\\\\ INVENTOR. v41. 2. M

WITNESSES ATTORNEY.

Patented November 10, 1903.

PATENT OFFI E.

HARLEY LEROY SHERWOOD, OF OAKLAND, CALIFORNIA.

"OIL-BURNER.

srnorrrca'rron forming part of Letters Patent No. 743,940, datedNovember 10, 1903.

Application filed December 26, 1902. Serial No. 136,600. (No model.)

To wZlw/wm it may concern:

Be it known that I,HAR EY LEROY SHER- WOOD, a citizen of the UnitedStates, residing at Oakland, in the county of Alameda and State ofCalifornia, have invented certain new and useful Improvements inOil-Burners, of

which the followingis a specification.

My invention relates to improvements in oil-burners, the object of myinvention being to provide an oil-burner which can be used in domesticstoves, ranges, or grates and which 1 will burn even distillate or a lowgrade of oil without the production of smoke or the deposition of soot.

My invention therefore resides in the novel construction,combination,and arrangement of parts for the above ends hereinafter fullyspecified,an d particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is 1 a perspective view of myimproved oil-burner. Fig. 2 is a longitudinalsection on the lefthandside through the center or axial line of the burner and on the righthand side through one of the air-supply pipes. Fig. 3 is a broken sideelevation of the hollow jcone detached. Fig. dis a horizontal section onthe line A A of Fig. 3. Fig. 5 is aperspec tive view showing a modifiedform of attachment of the air-supply pipes to the cover. Fig. 6 is alongitudinal vertical section showing a modification of theair-conduits;

Referring to the drawings, 1 represents a suitable base, having acentral aperture 2 and four apertures 3 at or near the corners thereof.Said ap ertures' 2 and 3 are surrounded Joy flanges 4, and the baseitself is also surrounded by a rim or flange 5 of shbstantially the sameheight as the flanges fl, the object of these flanges being to preventthe oil overflowing from the base when lighting the burner. It will beunderstood that, as is usual with this class of burners, on startingthe" fire a cer tain amount of oil is allowed to flow upon the base,'andthis is first burned by bits of paper or other substances laid upon thebase, and the combustion of this oil serves to heat the oil flowingafter it and to vaporize the same.

extending upward from saidfianged portion.

' formed at the top with a number of equidistant grooves or channels 10,which broaden at the bottom, as shown, the object of said channelsbeingto distribute the oil evenly around the surface of the spreader. Uponthe wall of said spreader are formed buttresses 11, which serve thepurpose of properly spacing the cover from thespreaden cone. They haveledges 12 at their lower ends, and upon said ledges rests'the cupshapedcover 1 3,-which form s with the spreader the combined retort andmixing-chamber l4. Into the upper portion of the cover are screwed thesmall ends of tapering, curvech' or hornlike' air-supply .pipes 1 5, thelower or enlarged ends of said pipes fitting around the flanges i, whichextend upward around the apertures 3'at the corners of the base. The oilwhich is burned in said basein starting the fire heats said air-supplypip'es 15, so that the air which enters the chamber 14. is thoroughlyheated thereby. The chamber 14: itself and the'cover which forms theouter wall thereof are'also" highly heated by the flames fromsaidburning oil. For these reasons said oil is completely vaporized, andthe commingled air and vapor resulting therefrom are burned at'th'ebaseof said cover, and the flames emerging from the space between said baseandithe flanged portion-f the spreadercone intensify the heat of'all"the parts exposed to their action-that is to say, the cover and theupper portions of the air-supply chamber. Thus the distillate or otheroil is completely burned without any smoke and without the deposition ofsoot.

A great drawback to oil-burners which are intended to burn unrefinedoil, especially-that having an asphaltic base, has been thedeposition ofthe asphalt or sediment in the oilsupply pipe caused by the heating ofthe oil. It will be observed that in my construction the oil-supply pipeis surrounded up to its point of discharge by a body of air within thehollow spreader-cone. This shields or insulates said pipe from the heatof the combustion-chamber, so that no deposition of sediment takes placein said pipe. For very crude oil the modification shown in Fig. 6 may bepreferred, in which the base 1 rests upon the walls 16 of a second base17, which latter has formed integral therewith at its center a sleeve ortube 18, which when in position surrounds the oil-supply pipe 9 for thegreater portion of its height. The walls 16 form with said base 17 aclosed chamber around the apertures 3. The result is that a good part ofthe air which is supplied to the combustion-chamber through theair-supply pipes 15 must flrst'be drawn upward around the oil-supplypipeand within said sleeve 18, then over the top of said sleeve, thendown around the same and within the spreader-cone, then between the twobases, and then through the apertures 3 and the air-supply pipes 15 asbefore. This construction possesses two advantages-first, by causing aconstant circulation of the air within the spreader-cone, in drawing offheated air therefrom on the outside of the sleeve, and replenishing withcool air passing up on the inside thereof around the pipe it is insuredthat said oil-supply pipe shall be maintained always sufficiently cold;secondly, the heat of the air acquired within the spreader-cone is nowadded to the heat derived by passage through the heated air-supplypipes, so that the heat of the air used for combustion is intensified.It is not necessary, however, that thewhole of the air used forcombustion shall pass up and around the sleeve 18. The proportion whichso passes will depend upon the closeness of the fit between the bases 1and 17.

21 represents a disk which is placed upon the top of the cover, asshown, and serves the purpose of deflecting the flames onto theairsupply pipes to heat the same. It will be observed that theseair-supply pipes are so arranged that the flames ascending between themand deflected by the spreader will come about in the middle 'of theholes of the top of an. ordinary cook-stove when the burner is placed inthe grate of said stove.

The height and conical form of the spreadercone and cover form animportant feature of myinvention as they thus provide a longdowndraftchimney or combustion-chamber which is intensely heated by theflames ascending around on the outside thereof.

I claim- 1. In an oil-burner, the combination of a base having anaperture, a hollow spreader,

over said aperture, an oil-supply pipe leading upward in the interior ofsaid hollow spreader to the top thereof, and discharging onto its uppersurface, a cover over said spreader forming therewith a combined retortan d m ixing-chamber having adownwardly-opening mouth or aperturethrough which the flames discharge around said spreader, and anairsupply pipe attached to said cover at or near said chamber to providea conduit for the air which shall be heated by said flames,substantially as described.

2. In an oil-burner, the combination of a base having an aperture, ahollow spreader over said aperture, an oil-supply pipe leading upward inthe interior of said hollow spreader to the top thereof, and dischargingonto its upper surface, a cover over said spreader forming therewith acombined retort and mixing-chamber having a downwardly-opening mouth oraperture through which the flames discharge around said'spreader, anair-supply pipe attached to said cover at or near said chamber toprovide a conduit for the air which shall be heated by said flames, anda deflector on said cover, substantially as described.

3. In an oil-burner, the combination of a base having an aperture, ahollow spreader over said aperture, an oil-supply pipe leading upward inthe interiorof said hollow spreader to the top thereof, and dischargingonto its upper surface, a cover over said spreader forming therewith acombined retort and mixing-chamber having a downwardly-opening mouth oraperture through which the flames discharge around said spreader, and upwardly-curving air-supply pipes the upper ends of which are screwed intosaid cover, and the lower ends of which surround apertures in said base,substantially as described.

4. In an oil-burner, the combination of a base having an aperture, ahollow spreader over said aperture, an oil-supply pipe leading upward inthe interior of said hollow spreader to the top thereof, and dischargingonto its upper surface, a cover over said spreader forming therewith acombined retort and mixing-chamber having a downwardly-opening mouth oraperture through which the flames discharge around said spreader,upwardlycurving air-supply pipes the upper ends of which are screwedinto said cover, and the lower ends of which surround apertures in saidbase, and a deflector on said cover above the upper ends of said pipes,substantially as described.

5. In an oil-burner, the combination of a base, a hollow spreadersupported on said base, an oil-supply pipe discharging at the top ofsaid spreader onto the upper surface thereof, a cover over said spreaderforming therewith a combined retort and mixingchamber having adownwardly extending mouth or aperture through which the flamesdischarge around said spreader, and air-supply pipes passing above saidmouth or aperture and connected with said combined retort andmixing-chamber, substantially as described.

6. In an oil-burner, the combination of a base, a hollow spreadersupported on said base, an oilsupply pipe discharging at the top of saidspreader onto the upper surface thereof, a cover over said spreaderforming therewith a combined retort and mixingchamber having adownwardly opening mouth or aperture through which the flames IOCdischarge around said spreader and air-supply pipes attached to saidcover at or near said chamber and passing over said mouth or aperture,substantially as described.

7. In an oil-burner, the combination of a base, a spreader supported onsaid base, an oil-supply pipe discharging at the top of said spreaderover the outer surface thereof, a cover over said spreader formingtherewith a combined retort and mixing-chamber having a downwardlyopening mouth or aperture through which the flames discharge around saidspreader, said cover and spreader having coengaging parts to space thetwo at the proper distance apart, and air-supply pipes connected withsaid combined retort and mixing -chamber and passing over the flamesemerging from said mouth or aperture, substantially as described.

8.- In an oil-burner, the combination of a base, having an aperture, aspreader supported on said base around said aperture, an oilsupply pipeextending upwardly within base upon which the first base rests, saidsecond base having a sleeve extending around said oil supply pipe withinsaid hollow spreader and said bases forming the upper and lower walls ofan air supply chamber, substantially as described.

In witness whereof I have hereunto set my hand in the presence of twosubscribingwit-- nesses.

HARLEY LEROY SHERWOOD,- V

Witnesses:

F. M. WRIGHT, BEssIE GORFINKEL. A

